https://scholars.lib.ntu.edu.tw/handle/123456789/626372
標題: | Synergistic effect of amino-functionalized SBA-15 in Cu-catalyzed oxidative homocoupling of phenylacetylene | 作者: | Chen G.-P Chang C.-C Tsai Y.-Y Lee J.-F SOO-FIN CHENG |
關鍵字: | Alkynes; Cu-catalyst; Homocoupling; SBA-15; Synergistic | 公開日期: | 2022 | 卷: | 635 | 來源出版物: | Applied Catalysis A: General | 摘要: | SBA-15 mesoporous silica materials with short mesochannels functionalized with various amino-groups, including NH2-, MeNH-, diamine-, triamine- and guanidine-groups were prepared through one-pot co-condensation of tetraethylorthosilicate (TEOS) and amino-containing trimethoxysilanes in the presence of P123 as pore-directing agent and an appropriate amount of Zr(IV) ions. The resultant materials immobilized with CuCl were examined as reusable catalysts in the oxidative homocoupling of phenylacetylene at room temperature with air as the oxidant. Efforts were made to avoid the liquid base additives. The Cu-guanidine-SBA-15 catalyst with Cu/guanidine molar ratio of 0.6 was found to satisfy this objective and gave the highest yield (up to ca. 97%) and nearly 100% selectivity of 1,4-diphenyl-1,3-butadiyne in 24 h. Moreover, the catalyst could retain around 90% yield after reuses for three times. © 2022 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126284649&doi=10.1016%2fj.apcata.2022.118570&partnerID=40&md5=9202491158b3f5d79b6ce08b6a7f6361 https://scholars.lib.ntu.edu.tw/handle/123456789/626372 |
ISSN: | 0926860X | DOI: | 10.1016/j.apcata.2022.118570 | SDG/關鍵字: | Additives; Amines; Aromatic hydrocarbons; Chlorine compounds; Copper compounds; Mesoporous materials; Molar ratio; Silica; Zirconium compounds; Alkyne; Cu catalyst; Cu catalysts; Cu-catalysts; Homocoupling; Oxidative homocoupling; Phenylacetylenes; SBA-15; Synergistic; Synergistic effect; Catalyst selectivity |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。